Yarn-carrier for warp-printing machines.



A. HOFMAN N. YARN CARRIER FOR WARP PRINTING MACHINES.

APPLIUATION FILED DEU.1, 1909..

Patented July 12, 1910.

2 SHEETS-SHEET 1.

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A. HOFMANN.

YARN cARRIRR FOR WARP PRINTING MACHINES.

APPLICATION I'ILED DEC. 1, 1909.

964,022. Patented July 12, 1910.

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Wrihesses= 171F677]??? ALFRED HOFMANN, 0F GOTTENBORG,

SWEDEN.

YARN-CARRIER FOR WARP-PRINTING MACHINES.

Specification of Letters Patent. Application filed December 1, 1909.

Patented July 12, 1910. Serial No. 530,850.

To all whom it may concern:

Be it known that I, ALFRED HoFMAN N, director, a subject of the King ofSweden, residing at Gottenborg, Sweden, have invented certain new anduseful Improvements in Yarn-Carriers for Warp-Printing Machines, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

In printing warp yarns, among the devices used is a prismatic drum,around which the yarn is wound, and which is moved by means of acarriage across printing rollers, said rollers being raised before thepassage of the drum according to the pattern to be printed, therebyproducing a number of colored stripes across the hank of yarn. Each sideor face of the drum has preferably the same length as the width of theprinting surface of the printing machine proper, so that the yarn onsuch a side or face is printed every time the carriage with the drummoves in one direction across the machine, and the drum is then rotated,so that another side or face is turned toward the printing rollers, andthe new section of yarn is printed during the return movement of thecarriage on which the drum is mounted, until the yarn on all sides ofthe drum has been printed. The length of the repeat of the pattern thusprinted can never exceed the whole circumference of the drum, but thelatter cannot be made of indefinite size, as it would become too heavyand diflicult to manage, so that very great lengths of pattern repeats,such as are used for weaving measured off carpets orrugs, table cloths,etc., cannot be printed advantageously on such a drum.

The present invention has for its object to increase the efficiency andconvenience of yarn printing machines of the class referred to by using,in combination with a drum, one or several rollers or reels, supportedby the carriage on which the drum is mounted, so that they are movedalong the printing machine with the drum as the latter is moved over theprinting rollers. The yarn hank or skein then is placed over one side ofthe drum, and also over the reel or reels, which are preferablyadjustably mounted relative to the drum in the supporting frame and arealso preferably provided with longitudinally adjustable arms, so thatseveral possible ways of varying the circumference of the hank or skeinwhich is to be laid around the drum and reels are afforded and a wlderange of ELClJHStDlQIlt is provided for. In the accompanying drawings, ayarn carrier with one drum and two reels, and a yarn hank or skein laidaround the same are shown in an end view in Figure l and in a side viewin Fig. 2.

Referring to the drawings, a is the drum, supported by a carriage b,which also carries a frame 0, in which are mounted two supports, rollersor reels d, around which and the drum is laid a hank or skein e of thewarp yarn, the circumference of which has the length required by thepattern. The two reels d are adjustable in the frame 0, so that they maybe moved toward or from each other to accommodate different lengths orsizes of yarn hanks or skeins. Of course it will be understood that onlyone reel, adjustable to different distances from the drum, or more thantwo reels may be used, if desired. The frame 0 is preferably providedwith adjustable tension rollers f to afford proper tension to the warpyarn hank, and the arms 9 of the reels are preferably made lengthwiseadjustable, so that said arms are extensible and contractible, to varythe sizes of the reels.

lVhen a section of yarn resting against the under side of the drum hasbeen printed, the drum is partially rotated so that a new side or face,with a new section of yarn, will be turned downward, ready for printing,the yarn being each time fed forward into printing position, until thewhole hank has been printed.

Having thus described my invention I claim and desire to secure byLetters Patent:

1. A yarn carrier for warp printing machines comprising the combinationwith a suitable carriage, of a rotary printing drum mounted thereon, aframe supported by said carriage, and one or more yarn reels mounted onsaid frame and being thus adapted to travel with said carriage and drum.

2. A yarn carrier for warp printing machines comprising the combinationwith a suitable carriage, of a rotary printing drum mounted thereon, aframe supported by said carriage and one or more yarn reels adjustablymounted on said frame and being thus adapted to travel with saidcarriage and drum.

3. A yarn carrier for warp printing machines comprising the combinationwith a suitable carriage, of a rotary printin drum mounted thereon, aframe supported by said carriage and one or more yarn reels mounted onsaid frame and being thus adapted to travel with said carriage and drum,said reel or reels being constructed with ad justable 0r extensiblearms.

4. A yarn carrier for warp printing machines comprising the combinationwith a suitable carriage, of a rotary printin drum mounted thereon, aframe supported y said carriage, one or more yarn reels mounted on saidframe and being thus adapted to travel with said carriage and drum, andtension 15 rolls adjustably mounted on said frame and cooperating withsaid reel or reels and said drum.

In testimony whereof I have signed my name to this specification in thepresence of 20 two subscribing witnesses.

ALFRED HOFMANN.

Witnesses:

KLAs J ONSON, E. JOHNSON.

